Girls' Night In

Katie convinces Lisa to let her host a "Girls' Night In" party on James's former night, but Billie Lee lashes out at Katie for not including her in the planning. Brittany throws an unexpected tantrum, causing her friends to speculate she's stressed over her engagement to Jax. Lala decides James is moving too fast in rebuilding their friendship, and Stassi creates her own personal holiday: National Outfit of the Day Day.